Merino missed the Gunners’ most recent match - against Crystal Palace last Wednesday - and was a doubt for the first leg of Arsenal’s semi-final against PSG at Emirates Stadium on Tuesday. The Spaniard, however, took part in training on Monday afternoon and is expected to be fit for the game.

PSG are two games away from making the UEFA Champions League final in Munich. First, they must defeat Arsenal over two legs, the first being at the Emirates on